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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from neutron_lib.api.definitions import portbindings
from neutron_lib.callbacks import events
from neutron_lib.callbacks import registry
from neutron_lib.callbacks import resources
from neutron_lib import context as n_context
from neutron_lib.db import api as db_api
from neutron_lib import exceptions as n_exc
from neutron_lib.services.trunk import constants as trunk_consts
from oslo_config import cfg
from oslo_log import log
from neutron.common.ovn import constants as ovn_const
from neutron.db import db_base_plugin_common
from neutron.db import ovn_revision_numbers_db as db_rev
from neutron.objects import ports as port_obj
from neutron.services.trunk.drivers import base as trunk_base
SUPPORTED_INTERFACES = (
portbindings.VIF_TYPE_OVS,
portbindings.VIF_TYPE_VHOST_USER,
)
SUPPORTED_SEGMENTATION_TYPES = (
trunk_consts.SEGMENTATION_TYPE_VLAN,
)
LOG = log.getLogger(__name__)
class OVNTrunkHandler(object):
def __init__(self, plugin_driver):
self.plugin_driver = plugin_driver
def _set_sub_ports(self, parent_port, subports):
txn = self.plugin_driver.nb_ovn.transaction
context = n_context.get_admin_context()
db_parent_port = port_obj.Port.get_object(context, id=parent_port)
parent_port_status = db_parent_port.status
for subport in subports:
with db_api.CONTEXT_WRITER.using(context), (
txn(check_error=True)) as ovn_txn:
port = self._set_binding_profile(context, subport, parent_port,
parent_port_status, ovn_txn)
db_rev.bump_revision(context, port, ovn_const.TYPE_PORTS)
def _unset_sub_ports(self, subports):
txn = self.plugin_driver.nb_ovn.transaction
context = n_context.get_admin_context()
for subport in subports:
with db_api.CONTEXT_WRITER.using(context), (
txn(check_error=True)) as ovn_txn:
port = self._unset_binding_profile(context, subport, ovn_txn)
db_rev.bump_revision(context, port, ovn_const.TYPE_PORTS)
@db_base_plugin_common.convert_result_to_dict
def _set_binding_profile(self, context, subport, parent_port,
parent_port_status, ovn_txn):
LOG.debug("Setting parent %s for subport %s",
parent_port, subport.port_id)
db_port = port_obj.Port.get_object(context, id=subport.port_id)
if not db_port:
LOG.debug("Port not found while trying to set "
"binding_profile: %s",
subport.port_id)
return
check_rev_cmd = self.plugin_driver.nb_ovn.check_revision_number(
db_port.id, db_port, ovn_const.TYPE_PORTS)
ovn_txn.add(check_rev_cmd)
try:
# NOTE(flaviof): We expect binding's host to be set. Otherwise,
# sub-port will not transition from DOWN to ACTIVE.
db_port.device_owner = trunk_consts.TRUNK_SUBPORT_OWNER
# NOTE(ksambor): When sub-port was created and event was process
# without binding profile this port will end forever in DOWN
# status so we need to switch it here to the parent port status
db_port.status = parent_port_status
for binding in db_port.bindings:
binding.profile['parent_name'] = parent_port
binding.profile['tag'] = subport.segmentation_id
# host + port_id is primary key
port_obj.PortBinding.update_object(
context,
{'profile': binding.profile,
'vif_type': portbindings.VIF_TYPE_OVS},
port_id=subport.port_id,
host=binding.host)
db_port.update()
except n_exc.ObjectNotFound:
LOG.debug("Port not found while trying to set "
"binding_profile: %s", subport.port_id)
return
ext_ids = {ovn_const.OVN_DEVICE_OWNER_EXT_ID_KEY: db_port.device_owner}
ovn_txn.add(self.plugin_driver.nb_ovn.set_lswitch_port(
lport_name=subport.port_id,
parent_name=parent_port,
tag=subport.segmentation_id,
external_ids_update=ext_ids,
))
LOG.debug("Done setting parent %s for subport %s",
parent_port, subport.port_id)
return db_port
@db_base_plugin_common.convert_result_to_dict
def _unset_binding_profile(self, context, subport, ovn_txn):
LOG.debug("Unsetting parent for subport %s", subport.port_id)
db_port = port_obj.Port.get_object(context, id=subport.port_id)
if not db_port:
LOG.debug("Port not found while trying to unset "
"binding_profile: %s",
subport.port_id)
return
check_rev_cmd = self.plugin_driver.nb_ovn.check_revision_number(
db_port.id, db_port, ovn_const.TYPE_PORTS)
ovn_txn.add(check_rev_cmd)
try:
db_port.device_owner = ''
for binding in db_port.bindings:
binding.profile.pop('tag', None)
binding.profile.pop('parent_name', None)
# host + port_id is primary key
port_obj.PortBinding.update_object(
context,
{'profile': binding.profile,
'vif_type': portbindings.VIF_TYPE_UNBOUND},
port_id=subport.port_id,
host=binding.host)
port_obj.PortBindingLevel.delete_objects(
context, port_id=subport.port_id, host=binding.host)
db_port.update()
except n_exc.ObjectNotFound:
LOG.debug("Port not found while trying to unset "
"binding_profile: %s", subport.port_id)
return
ext_ids = {ovn_const.OVN_DEVICE_OWNER_EXT_ID_KEY: db_port.device_owner}
ovn_txn.add(self.plugin_driver.nb_ovn.set_lswitch_port(
lport_name=subport.port_id,
parent_name=[],
up=False,
tag=[],
external_ids_update=ext_ids,
))
LOG.debug("Done unsetting parent for subport %s", subport.port_id)
return db_port
def trunk_created(self, trunk):
# Check if parent port is handled by OVN.
if not self.plugin_driver.nb_ovn.lookup('Logical_Switch_Port',
trunk.port_id, default=None):
return
if trunk.sub_ports:
self._set_sub_ports(trunk.port_id, trunk.sub_ports)
trunk.update(status=trunk_consts.TRUNK_ACTIVE_STATUS)
def trunk_deleted(self, trunk):
if trunk.sub_ports:
self._unset_sub_ports(trunk.sub_ports)
def subports_added(self, trunk, subports):
# Check if parent port is handled by OVN.
if not self.plugin_driver.nb_ovn.lookup('Logical_Switch_Port',
trunk.port_id, default=None):
return
if subports:
self._set_sub_ports(trunk.port_id, subports)
trunk.update(status=trunk_consts.TRUNK_ACTIVE_STATUS)
def subports_deleted(self, trunk, subports):
# Check if parent port is handled by OVN.
if not self.plugin_driver.nb_ovn.lookup('Logical_Switch_Port',
trunk.port_id, default=None):
return
if subports:
self._unset_sub_ports(subports)
trunk.update(status=trunk_consts.TRUNK_ACTIVE_STATUS)
def trunk_event(self, resource, event, trunk_plugin, payload):
if event == events.AFTER_CREATE:
self.trunk_created(payload.states[0])
elif event == events.AFTER_DELETE:
self.trunk_deleted(payload.states[0])
def subport_event(self, resource, event, trunk_plugin, payload):
if event == events.AFTER_CREATE:
self.subports_added(payload.states[0],
payload.metadata['subports'])
elif event == events.AFTER_DELETE:
self.subports_deleted(payload.states[0],
payload.metadata['subports'])
class OVNTrunkDriver(trunk_base.DriverBase):
@property
def is_loaded(self):
try:
return (ovn_const.OVN_ML2_MECH_DRIVER_NAME in
cfg.CONF.ml2.mechanism_drivers)
except cfg.NoSuchOptError:
return False
@registry.receives(resources.TRUNK_PLUGIN, [events.AFTER_INIT])
def register(self, resource, event, trigger, payload=None):
super(OVNTrunkDriver, self).register(
resource, event, trigger, payload=payload)
self._handler = OVNTrunkHandler(self.plugin_driver)
for trunk_event in (events.AFTER_CREATE, events.AFTER_DELETE):
registry.subscribe(self._handler.trunk_event,
resources.TRUNK,
trunk_event)
registry.subscribe(self._handler.subport_event,
resources.SUBPORTS,
trunk_event)
@classmethod
def create(cls, plugin_driver):
cls.plugin_driver = plugin_driver
return cls(ovn_const.OVN_ML2_MECH_DRIVER_NAME,
SUPPORTED_INTERFACES,
SUPPORTED_SEGMENTATION_TYPES,
None,
can_trunk_bound_port=True)
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